Process of treating portland-cement surfaces and product.



. M. TOGH. PBOGESS OF TEEATING PORTLAND CEMBNT SUEFAGES AND PRODUGT.

APPLIOATION I'ILED APB.. 18, 1908.

Patented Dec. 14, 1909.

' UNITED STATES PATENT OFFICE. V

I MAXIMILIAN TOCH, OF NEW YORK, N. Y. 'i 7 PBOCESS OF TREATING PORTLAND-CEMENT SURFACE AND PRODUCT.

Specification of Letters Patent.

Application filed April 18, 1908. Serial No. 427,858.

To all 'whom it may concem:

dissolved resin and a pigment. as heretofore.

Patented Dec. 14, 1909.

Be it known that I. MAXIMILIAN TOCH. a The calcium oil soap produced by the action citizen of the'l'nited States. residing at New of the new filler on the cenent is a satisfac- York, iu the countyof New York and State toi-y substitute for the calcium resinate of New York, have invented certain new and layer of my previous patent. The silica or useful Improvements in Processes of Treatother finely-divided material is intimately ing Portland-Cement Surfaces and Products, associated with the hardened layer proof which the following is a specification. duced by the action between the acids of the In my United States Letters Patent No. oil in the filler and the Portland cement,

10 813841, dated February 27,1906, I have deand, in turn, furnishes a rough surface to "scribed and claimed a method of treating which the finishing coat firmly adheres. Portland-cement constructions by first ap- The accompanying drawing shows, in plyng to the surface of the cement a liquid transverse section a mass of Portland cefiller containing an acid resin, a vegetable ment 1. having a surficial layer 2 of a caldrying oil and a diluent, and then applying cium oil soap carrying particles of finelya finishing coating containing a dissolved divided silica 3, and a finishing coat 4 suresin and a pigment. The acid filler reacts perposed upon and adhering to -the rough, with the calcium compounds in the cement hard surficial layer.

to form a hard calcium-resinate which proclainn tects the cement from abrasion and is re- 1.' The process of treating Portland-ceinforced by the 'second coating. I have now ment surfaces, which consists in first superfound that finely-divided silica, or other ficially hardening the cement by converting inert solid material in the form of fine ancalcium therein to an Organic-acid salt, gular fragments, may be advantageously and simultaneously providing the cement mixed with the filler, remaining as a rough with a rough surface, and then applying a layer on the surface of the cement after the finishing coatiug. filler has reacted with it to superficially con- 2. The process of treating Portland cevert the contained calcium into a hard layer ment surfaces, which consists in first applyof an Organic-acid salt. The finishing coat ing to the cement a mixture containing a then adheres tenaciously to the rough `surdissolved or anic acid and a Suspended face of the chemically-hardened cement. finely-divide inert solid, thereby simulta- According to my present invention` I first neously superficially converting calcium in treat the cement with a filler consisting of a the cement .into a hard Organic-acid salt and mixture of a Vegetable drying oil, containproviding the cement with a rough surface,

in a small percentage of a free acid which and then applying a finishingcoatng;

will combine with calcium, and finelydi- 3. The process of treating Portland-cevided silica or its equivalent Raw linseed, ment sui-faces, which consists in first applyhina, or perilla oil, or a mixture of two or ing to the cement a mixture of a Vegetable all of these oils, may be used. The silica oil containing a dissolvedfree acid and a may be replaced, for example, by finely-di- Suspended finely-divided inert solid, thereby vided crystalline calcium carbonate or sulsinultaneously superficially converting calfate,`barium sulfate, or magnesium or alucium in the cement into a hard Organic-acid minum silcate. The filler should contain an salt and providing the cement with a rough amount of the' finely-divided material desurface, and then applying a finishing coatpendent on .the specific gravity of the latter. ing'.

For example, I add to each gallon of the oil* 4. A Portland cement Construction havormixed oils, either one pound of a maing a rough surficial layer containing a calterial having a specific gravity of 2; 1.5 cium Organic-acid salt, and a finishing coat pounds of a material having a specific gravsuperposed upon and adlering to said 5& ity of 2.5; or 2 pounds of any material havrough layer.

ing a specific gravity above 2.5; 5. A Portland -cement Construction hav- The new filler is cheaper than the one ing a rough surficial layer containing a calpreviously patented by me, is effective as a cium oil soap, and a finishing coat superhardener and afi`ords a better basis for the posed upon and adhering to said rough laver.

finishing coat, which may be a mixture of a 6. A Portland-cement Construction havand a finishing coat superposed upon and ing a hard s'ficial layer carrying a finelyndherng to said surface layer. 10 'divided inert solid, and a finishing coat su- In testimony whereof, I aflx my signa- I perposed upon and adherng to sadsurface ture in presence of two witnesses.

MAXIMILIAN TOCH.

5 layer. I

7. A Portland-cement constructon hav- Wtnesses: mg a surfical layer contmmng a calcum HARRY E. BAER,

ROBT. M. WVIIITESEN.

oil soap and carrying fiely-divided silica, 

